Blue flame wickless oil burner



Se t. 3, 1935. G, GRQBARD 2,013,305

BLUE FLAME WICKLESS OIL BURNER Filed Nov. 10, 1932 2 Sheets-Sheet l 5% Gabriel firobard p 3, 1935- G. GROBARD v 2,013,305

BLUE FLAME WICKLESS OIL BURNER Filed NOV. 10, 1952 2 Sheets-Sheet 2 ll II awn/whom alin' 9i @rahard Patented Sept. 3, 1935 'rr n st-Ares p TENT-TQFF This. invention relates to blue'flame wickless' oil burners of the type having fuel grooves and combustion chambers thereabove and communicating therewith, the combustion chambers being formed'by concentric perforated shells.

;.An aim of the invention is to provide an improvedoilburner ofthis typewhich is highly efficient in operation in that a maximum amount I, of: heat maybe-derived from a given amountof hydrocarbon, and a steady uniform flame of the desiredintensity may be produced in the several combustion chambers. In accordance with my improved arrangement, there are provided a number of angularly spaced apart fuel grooves and a centrally located vaporizing cup, together with means 'for uniformly distributing the fuel admittedto the cup in the correct proportions to spaced points of the several fuel grooves, thus assuring that eachunit of the burner will 'func-j non-with maximum efiiciency and with a uni-; form, steady, continuouaannular flames Furthermore, in accordance with the present invention, the arrangement is such that the correct proportion of air v is mixed with the vapor within the combustion chambersin' order to insure complete combustion and maximum efficiency, which means that the burner willoperate without smudg-ing or smoking or giving ofi any obnoxious gases. Q l

- A further aim of the invention is to provide animproved arrangement of this sort wherein, the various grooves and channels, through or to which the fuel is admitted, may be very easily and readilycleaned. 1

Afurther aim of the invention isto provide an improved burner which is characterized by' its :compactness in arrangement as compared to its" high efficiency, whichis relatively simple and. economical in construction, and which requires practically no care.

Otherobjects will be in'part obvious and in partpointed out more in detail-hereinafter.

lfllhe 'inventionaccordingly consists in the features of construction, combination of elements and arrangement of parts which, will be exemplifiedin the. constructionhereinafter set forth and the scope of the application of which beindicated in the appended claims. l i In the accompanying drawings, wherein I'hav shown, for illustrative purposes, one ofthe em-, bodirnents which the present invention may take:

. Figural is a top plan view of theburner base with the cover therefonja portion'of the latter being broken-away;

. e. is a-sectional view taken substantially Will on lineZ-Z of Fig. 1, portions of the perforated shells being shown by broken lines; Fig.1 3 is a-sectional view through the burner base taken substantially on line 3-3 of Fig-1;; and i v 1 --Fig. 4 is a view of the cover for thelvaporizing,

cup and channels; 1 a Referring tothe drawings in detail, the base, which is preferably of a single casting, is shown as having a plurality of fuel grooves Ill-angularly spaced apart preferably at like distances from the center of :a centrally located vaporizing cup -:I I. In the present instance, threesuch fuel grooves are illustrated, .but obviously, thenumber there of may be varied-if desired; Each of the fuel grooves is:pre;ferably of annular form and has an exterior wall J2 and an interior concentric wall I 3. These walls are provided below their upper edges, with ledgesld upon which the usual perforated shells l5 and IGrest; Traversing the center of each ring in which a fuel grove ,isformed is 'a diametrically extending channel H which opens at its opposite ends into the fuel groove. Each of these channels has side walls 181011 the opposed'surfaces of which are shoulders IS on which an arm of the cover, hereinafter described, is adapted to'rest. These channels are arranged in .radiatingrelation withrespect to the center of the base. Between the cross bar on which the channel is formedand the ring in which the fuel groove is formedare parti-circular air openings 20 of sufficient size to insure admission of the correct amount of airto the interiorof theinner shell 16. The vaporizing cup is located between the three fuel rings and depends below the bottoms of those rings. The wall portions 2! of the cup are formed by the adjacent portions of the outer Wall 12 of the rings, and these portions are of a height which corresponds to the level of the shoulders IQ of the channels. Between these wall portions are connecting, wall portionsy'22 which extend from one ring to the adjacent one, and on the inner surfaces of these wall portions 22 are shoulders or ledges 23 of the same height as the shoulders or ledges l9 and the tops of the wall portions 2|. Leading downwardly from the bottom of the vaporizing chamber is a threaded opening 24 -adapted to receive the usual oil supseveral channels llintermediate the ends of these channels. The openings between the channels and the conduits are designated generally by the numeral 26. The bottoms of theseconduits are preferably inclined downwardly fromthe openings to the bottom of the vaporizing cup in order to facilitate cleaning of the conduits. If desired, the casting forming the base may have suitable braces 21 between the oil rings.

The cup and'the channels are adapted to be ,closed at their tops by suitable closure means which may take theior'm of a, cover, such as shown in Fig; 4. 'This'cover, which is;.preferably 'formed by stamping the same from sheet metal,

is provided with a central portion 39, corresponding generally to the cross sectionof the cup, and

radiating arms 3| adapted to rest upon the ledges l9 of the channels, and which channels also Iradiate with respect. to the center of the cupg with this-arrangement, it will be observed that I the vaporizing cup is in communication with=-the central portions of the channels onlythrough the conduits 25,.andf each channelis in communica ,tionwith its respective fuell groove atvthe ends points of the" groove.

of: the channel and' -at diametrically opposite In operation, the burner is manner andJtoi facilitate lightingfthe ordinary starting wicks, located in the-fuel"gr0oves;?inaybe employed; such wicks, however, notbeing shown,- as they-,are-not necessary and they a're old 7 andw'ell-knownin the art. a After the burner i8v p l flfiheifiel, such as ke'rose'n'e; is admitted to the vaporizing'chamber and flows there-- .from in the formof vapor'throughthe conduits and the openings 2G 'of the central portions'of the radiating channels l l. The vapor admitted to each cliannel'thenflows towards the-opposite ends of the channel and into the fuel grooves at diametrically opposite points; The vapor ad mittedto the grooves at-su'cshpoints;will flow about the grooves; The-vapor admitted to the fuelgrooves willri'se into the combustion space a between the shells i5 and I6 iwhere it will beproperly mixed-with air isothatl a-elea-r blue 1 flame will result; complete combustion taking V be admitted through the-openings zil and aboutthe several rings inord'er 'to i-n'sure' the-proper placef It'is observed that; with'myimproved ar rangement, the 011' vapor Will -fie ,admitte d 'tj the" 7 fuelgrooves atsp'aced: points in; each groove and in'the correct proportions, and sufficient-air willmixture of vapor and air within the combustion chambers, which means that the appar'atus will operate" with maximum efficiency and give-effan intense-heat. ,The'burner'may be very-readily cleaned after removal-"ofthe shells and the cover for the channels and vaporizing-cup. when the cover is r'emoved the full lengths of the-channels are open to.view and ready -a'iccess is' hact to'the vaporizingcup. The conduits at mayfbere'adil y cleaned by inserting; a suitabletool therei-nto through the openings 'zt in thebottoms of the 'channelsfTThere is thus-provided avery compactphighly'eflicient burner at a 'rlatively low cost of manufacture and installation', "and" one which requiresbut litle attention, and one which mayrbe 'very -easilyand readily cleaned when desired." f r .As many changes could be made inth'e above construction and many-apparently widely different embodiments or"v thisinvention could be made without" departing from the scope thereof, it is intended that all matter contained in'theahove description or shown in the accompanying drawings shall Ice-interpreted as illustrative and not ir'i'a limitingsense s .7

It is also to be understood that the language lighted in the usual used in the following claims is intended to cover all of the generic and specific features of the in vention herein describedand all statements of the i scope of the invention which, as'a matter of lan-e guage, might be said to fall therebetween.

I claim as my invention:

1. In an oil burner of the character described,

a plurality of ring-like members each having an annular iuel-groovein its' uppersurface, each of said members having adiametrically extending passage communicating at its opposite ends with a;respective fuel groove, a cup about which said members areangularly spaced apart, and con duits radiating from said cup and leading to the central pertions of said passages. 1

2. In an oil burner of the character described, an integr'al base having a centrally located cup and a plurality of ring-like members angularly spaced about said cup and each having an annular 'fuel groovezin: its upper face, the outer walls of said grooves formingf portions of the walls of;

said cup; each of said ring-like Imembers having a: diametrically extending portion forming:achannel communicating at its opposite ends'iwith: the

fuel groove, said cup hav'ing its bottom disposed below-the bottoms of said oil groovesdandtconl duits leading from said cup at a point 'belowthe' bottom of saidgrooves to the central portionsof said channels. Y

31in an oil burne'r oi the character described, a plurality of'ring-like members each having" an annular fuel groove in its upper face,each groove having an inner wall-and an outer wall, a cross bar within each ring-like member and having achannel communicating, at its opposite ,ends with the groove in said member, a cup about which said members are r angularly spaced apart and having wall-portions formed 'by the outer walls of said fuel groovesgsaid cup depending below said members," and conduits leading 7 from the lower'portion ofgsaid cup; to the central portions-of said channels; f --'4'."In an oil burner'ofthe character described,

an integral base havingja' centrally located cup" and a plurality of ring-like members 'angularly disposed about said cup, "each ring-like memberhaving an annular fuel groove-in its upperffa'ce; I

provided with an'inner wall and anouter wall,

5. In an oil burner of the character described,

a base having a centrally located cup provided with an inlet and a plurality of ring-like mem bers angularly spaced-about said cup and each having a fuel groove in itsfupper face, each of said members having a diametricallyextending open top channel communicating at'its ends with a respective fuel groove, conduits leading from said cup to said channels, andj'closure means for covering the topof said cup'and thetops of said 6. In an oil burner of the character described,

a" base-having a centrally disposed opentop cup and a, plurality of ring like 'me mbers angularly spaced about said cup, each offsaid members hav ing'an annular fuel groovein its upper face provided with an inner wall and an outer wall, each of said members also having a diametrically extending open top channel communicating at its opposite ends with the'fuel groove with whichit is associated, said channels being in radiating relation with respect to said cup, conduits connecting said cup to the central portions of said channels, and a cover having a central portion closing the top of said cup and arm portions covering said channels.

7. In an oil burner of the character described, a base having a'vaporizing cup, a plurality of continuous fuel grooves angularly positioned about said cup and provided with a fuel passage associated with each fuel groove opening into said groove at spaced points therealong, and fuel conduits radiating from said vaporizing cup, each conduit connecting the interior of said cup with a respective fuel passage at a point in said passage intermediate the points at which said fuel passage opens into the associated fuel groove.

8. In an oil burner of the character described, a base having a vaporizing cup and provided with a plurality of continuous fuel grooves angularly positioned about said cup, a transverse fuel pas- V a unitary base having a vaporizing cup and provided with a plurality of continuous fuel grooves angularly positioned about saidcup, a fuel passage associated with each fuel groove opening into said fuel grooves at spaced points therealong, and fuel conduits radiating from said vaporizing cup, each conduit connecting the interior of said cup with a respective fuel passage.

GABRIEL GR OBARD. 

